Improvement in top-rollers for spinning



E. FREE-MAN.

-Roller fer Spinning.

Patented Sep.17, 1872.

Tp No. 131,432'.

UNITED STATES PATENT @Enron EDWIN FREEMAN, OF NORTON, MASSACHUSETTS,ASSIGNOR TO CORK AND LEATHER TOP ROLL COMPANY, OF PROVIDENCE, RHODEISLAND.

IMPROVEMENT IN TOP-ROLLERS FOR SPINNING.

Specification forming part of Letters Patent No. 131,432, datedSeptember 17, 1872.

To all whom it may concern:

Be it known that I, EDWIN FREEMAN, of Norton, in the county of Bristoland State of Massachusetts, have invented a certain new and usefulImprovement in Top-Roller, for Spinning.

My invention consists in a novel covering `for top-rolls to be usedeither as an exterior drawing-surface or as a foundation for the leathercovering ordinarily applied, composed of granulated wood, the particlesof which are united with a suitable adhesive substance, and which mayeither be applied in sheets to the roll or molded thereon; and I dohereby declare that the following specification, taken in connectionwith the drawing furnished and forming apart of the same,is a clear andtrue description of rolls embodying my invention, and a desirable methodof making the same.

Figure 1 represents, in perspective, one ,of my improved top-rollersprovided with a leather covering. Fig. 2 represents the same incross-section, and Fig; 3 represents one of my improved top-rollersprovided wholly with the' compoundcork covering.

It is to be understood that my roll in its general structure, does notdiffer from rolls lon gin use. I use the same metallic shell, and, whencovered with leather on a foundation composed of the granulated-woodcompound, its appearance differs only from other leathercovered rolls incommon use in having exposed at each end, in section, the layer ofthewoody compound. The said compound is preferably composed of granulatedcork-wood or corkdust, the particles of which are united into acomparatively solid but elastic mass by any suitable Vadhesive matter.

In practice it is found that, say, twenty pounds of granulated cork-woodsoaked in bisulphide of carbon and combined with five pounds of virgincaoutchouc, rendered fluid by the same solvent, (the latter beingapplied in sufficient quantity to the mass to render it sufcientlyplastic,) will produce a compound well suited for the purpose. It shouldbe evenly spread, while soft, upon any suitable lightwoven textilefabric of ilax or cotton, and,-

while drying, subjected tosucient pressure to secure proper solidity.After having been so prepared the cork compound77 is cut into strips andwound squarely upon the metallic surface of the roller, and securedthereto with any ofthe wellknown adhesive cements which have for manyyears been used in the art of covering rolls with leather. There aremany of' the numerous well-known solvents for caoutchouc which wouldundoubtedly serve as good a purpose as the bisulphide of carbon; butthat is known to be a desirable solvent in this connection. It has notbeen deemed essential to combine with the caoutchouc the mineral matterusually employed in the' process of vulcanization; if the gum should bevulcanized, however, it would not necessarily affect the practical valueof the compound. Some of the lighter woods-as, for instance, poplar andwhite pineT-can also be employed with approx imate results, but thecork-wood is much to be preferred to any known to me, and is as cheap asany other, as the refuse of' bottle-cork establishments can be procuredin 4desirable quantities at low cost. Among the several varieties of thearticle known as Kamptulicon or cork carpet (an larticle of Englishmanufacture) there are several kinds well suited to the purpose, andthey can be obtained at a cost so low as to render it unnecessary evento manufacture the compound expressly for the purpose of roll-covering.I am, however, unable to designate by any special term the particularkinds of Kamptulicon 7 so suited, or to so describe them that they canreadily be distinguished by their appearance from others which are notso well adapted to the use. In molding the compound upon the roll it isnecessary to have a mold made in section, with which the desired degreeof pressure can be attained. To secure proper unity between the compoundto be molded and the metal, a wrapper of twine saturated in the solventis first applied. Whether molded or applied in the sheet form it isdesirable always to put the roll thus covered into a lathe and to grindoft' the covering to a uniform thickness, whether said covering is to beemployed as an exterior drawing surface, or as a foundation for theusual leather clothing.

Cork-wood, in sliced sheets, has hitherto been employed with goodresults, both as an exterior covering and as a foundation for leather;but as the cork-wood so used is necessarily of 'the natural cork-Woodcan possibly be.

Having thus described my invention, I claim vas new and desire to secureby Letters Patent- As an improved article of manufacture, a top-rollerfor spinning, the covering of which is composed wholly or in partof alayer or layers of a compound of adhesive gums and granulated cork orother suitable Woody matter, substantially-as described.

EDWIN FREEMAN.

Witnesses:

SnvrEoN BORDEN, J AMES R. ELLIS.

